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Diffstat (limited to 'Detail.c')
| -rw-r--r-- | Detail.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/Detail.c b/Detail.c new file mode 100644 index 0000000..9f81e04 --- /dev/null +++ b/Detail.c @@ -0,0 +1,120 @@ +/* + * mdctl - manage Linux "md" devices aka RAID arrays. + * + * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Author: Neil Brown + * Email: <neilb@cse.unsw.edu.au> + * Paper: Neil Brown + * School of Computer Science and Engineering + * The University of New South Wales + * Sydney, 2052 + * Australia + */ + +#include "mdctl.h" +#include "md_p.h" +#include "md_u.h" + +int Detail(char *dev) +{ + /* + * Print out details for an md array by using + * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls + */ + + int fd = open(dev, O_RDONLY, 0); + int vers; + mdu_array_info_t array; + int d; + time_t atime; + + if (fd < 0) { + fprintf(stderr, "mdctl: cannot open %s: %s\n", + dev, strerror(errno)); + return 1; + } + vers = md_get_version(fd); + if (vers < 0) { + fprintf(stderr, "mdctl: %s does not appear to be an md device\n", + dev); + close(fd); + return 1; + } + if (vers < (90<<8)) { + fprintf(stderr, "mdctl: cannot get detail for md device %s: driver version too old.\n", + dev); + close(fd); + return 1; + } + if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { + if (errno == ENODEV) + fprintf(stderr, "mdctl: md device %s does not appear to be active.\n", + dev); + else + fprintf(stderr, "mdctl: cannot get array detail for %s: %s\n", + dev, strerror(errno)); + close(fd); + return 1; + } + /* Ok, we have some info to print... */ + printf("%s:\n", dev); + printf(" Version : %02d.%02d.%02d\n", + array.major_version, array.minor_version, array.patch_version); + atime = array.ctime; + printf(" Creation Time : %.24s\n", ctime(&atime)); + printf(" Raid Level : %d\n", array.level); + printf(" Size : %d\n", array.size); + printf(" Raid Disks : %d\n", array.raid_disks); + printf(" Total Disks : %d\n", array.nr_disks); + printf("Preferred Minor : %d\n", array.md_minor); + printf(" Persistance : Superblock is %spersistant\n", + array.not_persistent?"not ":""); + printf("\n"); + atime = array.utime; + printf(" Update Time : %.24s\n", ctime(&atime)); + printf(" State : %s, %serrors\n", + (array.state&(1<<MD_SB_CLEAN))?"clean":"dirty", + (array.state&(1<<MD_SB_ERRORS))?"":"no-"); + printf(" Active Drives : %d\n", array.active_disks); + printf(" Working Drives : %d\n", array.working_disks); + printf(" Failed Drives : %d\n", array.failed_disks); + printf(" Spare Drives : %d\n", array.spare_disks); + printf("\n"); + printf(" Layout : %d\n", array.layout); + printf(" Chunk Size : %dK\n", array.chunk_size/1024); + printf("\n"); + printf(" Number Major Minor RaidDisk State\n"); + for (d= 0; d<array.nr_disks; d++) { + mdu_disk_info_t disk; + disk.number = d; + if (ioctl(fd, GET_DISK_INFO, &disk) < 0) { + fprintf(stderr, "mdctl: cannot get disk detail for disk %d: %s\n", + d, strerror(errno)); + continue; + } + printf(" %5d %5d %5d %5d ", + disk.number, disk.major, disk.minor, disk.raid_disk); + if (disk.state & (1<<MD_DISK_FAULTY)) printf(" faulty"); + if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active"); + if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync"); + if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed"); + printf("\n"); + } + return 0; +} |